Bench-vise



(Model) 2 Sheets-Sheet 1.

W. H. NORTHALL.

BENCH VISE.

No. 332,209. Patented Dec. 8 1885.

Izweniar wizzz anz J7? JVZrikaFZ (ModeL) 2 SheetsSheet 2.

W. H. NORTHALL.

BENCH VISE.

No. 332,209. Patented Dec. 8, 1885.

Imeniow UNITED STATES PATENT OFFICE.

WILLIAM H. NORTHALL, OF BRIDGEPORT, CONNECTICUT.

BENCH-VISE.

SPECIFICATION forming part of Letters Patent No. 332,209, dated December8, 1885.

Application filed February 29, 1884. Serial No. 122,434.

' To all whom it may concern Be it known that I, WILLIAM H. NORTH- ALL,a citizen of the United States, residing at Bridgeport, in the county ofFair-field and State of Connecticut, have invented certain new anduseful Improvements in Bench-Vises; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention relates to certain novel and useful improvements inbench-Vises; and it has for its object to improve on the constructionand operation of the vise shown and described in my Patent No. 293,225,dated May 6, 1884.

My invention consists in the details of construction and combination ofelements hereinafter fully and in detail explained, and thenspecifically designated by the claims.

In order that those skilled in the art to which my invention appertainsmay more fully understand its construction and operation, I will proceedto describe the same in detail, referring by letter to the accompanyingdrawings, forming a part of this specification, in which Figure l is acentral longitudinal section taken through the stationary jaw and body,and showing the internal mechanism in side elevation; Fig. 2, a sectiontaken at the line a: m,- Fig. 3, a detail perspective of the nut,showing the jaws of the same distended by the wedge. Fig. 4 is a detailperspective view of the outside collar, showing the inclined recess.Fig. 5 is a central longitudinal section of the jaw and internalmechanism, and Fig. 6 is a bottom view illustrating the manner in whichthe visebody is secured to the plate.

Similar letters denote like parts in the several figures.

It is not deemed necessary to enter into any detail description of thegeneral construction and peculiar method of operation of my improvedvise, as they are fully described in my former application abovereferred to, and form no part of my present invention.

A is a plate which is bolted securely to the bench, and B the body ofthe vise, adapted to be placed over and upon said plate in such (ModoL)manner as to inclose the same laterally, and having thereon a freerotary or swivel movement. The body is extended laterally, as seen at A,Figs. 2 and 6, and is adapted to fit over and inclose an independentblock, 13. The periphery of the plate is beveled downward and inward, asshown, and the periphery of the block is beveled at the same angle, butin the opposite direction.

C is a set-screw, which is passed through the extension A into theblock, as shown at Fig. 2. \Vhen it is desired to secure the visebodyrigidly to the plate, the screw C is set up, which draws the blockupward, so that it binds tightly against said plate by reason of thepeculiar bevel of these parts, as above set forth. In my previousinvention the SWlV6l-GOHI160- tion between said body and plate is suchthat the plate extends upward and around the body of the vise, whichconstruction has been found disadvantageous, in that particles of dust,grime, or filings work themselves down be tween the plate and body, andrender the swivel practically useless until cleaned.

In my former patent, when the screw C was forced inward the splinedcollar D was thrown underneath the pawl E, so that the latter rode uponsaid collar when the main screw F was operated. I have found bypractical experiment that the friction between said pawl and collar hascaused both of these parts to become so worn as to prevent their engagement at the proper time. In my present application I overcome thisdifficulty by arranging on the main screw F, at the inner end of theoutside collar, C, an independent collar, H, adapted to enter the collarG,in the manner presently explained.

I are coil-springs placed between these two collars, in order to keepthem apart in their normal position.

\Vhen the screw C is set inward, the outside collar will be forcedagainst the collar H, and the pawl E will rest upon the latter, and ofcourse be out of engagement with the splined collar D. The several partsof the vise are now in such a relative position that the jaws arebrought together or spread by the rotative action of the main screw, asin any ordinary vise. As said screw is turned the splined collar willalso turn; but there will be no friction between said collar and thepawl, because the latter is supported in an elevated position by theindependent collar H, as before explained.

J is a wedge which is placed between the collar G and nut K, the jaws ofthe latter being grooved and adapted to be spread by the action of thewedge, as will be presently explained. The outer end of the collar G isrecessed, so as to support the wedge, and is constructed with aninclined portion, L.

When the several parts of the vise are in the relative position shown atFigs. 1 and 2 of the drawings, the jaw M of the vise is made to operateafter the manner of the ordinary sliding jaw by simply giving the screwF about a quarter of a turn to the left, thereby forcing the collar Garound and throwing the incline L against the incline N onto the wedge,and causing the latter to be forced between the j aws of the nut K, soas to distend them, as shown at Fig. 3. By turning the main screw to theright the incline L is thrown out of engagement with the incline N, andthe action of the spring 0 between the lower ends of the jaws of the nutwill bring the said jaws together, thereby forcing the wedge out, andthe thread on' the main screw will now engage with the nut.

In my previous patent I have shown and described a different way ofspreading the jaws of the nut; but by my present construction I amenabled to operate the same by the positive action of inclined surfaceswithout the use of any pawl, and, moreover, this particular part of thevise is thereby less liable to break at any violent turning of the mainscrew.

Having thus described myinvention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a vise, as described, the plate secured to the bench, and beveleddownward and in ward, as shown, in combination with the independentblock having its inner edge conformed to the beveled edge of the plate,the vise body having a lateral extension and adapted to fit over andinclose said plate and block, and the set-screw passed through saidextension into the block,substantially as shown and set forth.

2. In a vise, as described, the combination, with the outside collar, G,splined .collar D, and pawl E, of the independent collar H, arranged onthe main screw F, and adapted to support said pawl in an elevatedposition and out of contact with said splined collar, substantially asdescribed. 4

3. In a vise, as described, the outside collar, G, recessed and inclinedas set forth, and'means for rotating the collar G, in combination withthe wedge and nut, substantially as sh own and specified.

4. In a vise, as described, the jaws of the I nut having groovesinterior thereof, in combination with the wedge adapted to be forcedbetween said jaws by the action of the outside collar, and means foroperating the wedge, substantially as set forth.

5. The combination of the nut K, wedge J, having incline N, outsidecollar, G, recessed and having incline L, pawl E, splined collar D, andmain screw F, substantially as shown and described.

6. In a vise, as described, the jaws of the nut having spring 0 betweenthe lower extremities thereof, in combination with the wedge J, outsidecollar, G, and means for operating the same, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM H. NORTHALL.

Witnesses:

S. S. WVILLIAMsoN, W. T. HAVILAND.

